167 lines
6.0 KiB
Python
167 lines
6.0 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2015, 2016 OpenMarket Ltd
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import collections
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import twisted.internet.defer
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from ._base import SQLBaseStore
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class EndToEndKeyStore(SQLBaseStore):
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def set_e2e_device_keys(self, user_id, device_id, time_now, json_bytes):
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return self._simple_upsert(
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table="e2e_device_keys_json",
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keyvalues={
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"user_id": user_id,
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"device_id": device_id,
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},
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values={
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"ts_added_ms": time_now,
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"key_json": json_bytes,
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}
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)
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def get_e2e_device_keys(self, query_list):
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"""Fetch a list of device keys.
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Args:
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query_list(list): List of pairs of user_ids and device_ids.
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Returns:
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Dict mapping from user-id to dict mapping from device_id to
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dict containing "key_json", "device_display_name".
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"""
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if not query_list:
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return {}
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return self.runInteraction(
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"get_e2e_device_keys", self._get_e2e_device_keys_txn, query_list
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)
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def _get_e2e_device_keys_txn(self, txn, query_list):
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query_clauses = []
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query_params = []
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for (user_id, device_id) in query_list:
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query_clause = "k.user_id = ?"
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query_params.append(user_id)
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if device_id:
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query_clause += " AND k.device_id = ?"
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query_params.append(device_id)
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query_clauses.append(query_clause)
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sql = (
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"SELECT k.user_id, k.device_id, "
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" d.display_name AS device_display_name, "
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" k.key_json"
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" FROM e2e_device_keys_json k"
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" LEFT JOIN devices d ON d.user_id = k.user_id"
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" AND d.device_id = k.device_id"
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" WHERE %s"
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) % (
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" OR ".join("(" + q + ")" for q in query_clauses)
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)
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txn.execute(sql, query_params)
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rows = self.cursor_to_dict(txn)
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result = collections.defaultdict(dict)
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for row in rows:
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result[row["user_id"]][row["device_id"]] = row
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return result
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def add_e2e_one_time_keys(self, user_id, device_id, time_now, key_list):
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def _add_e2e_one_time_keys(txn):
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for (algorithm, key_id, json_bytes) in key_list:
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self._simple_upsert_txn(
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txn, table="e2e_one_time_keys_json",
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keyvalues={
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"user_id": user_id,
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"device_id": device_id,
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"algorithm": algorithm,
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"key_id": key_id,
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},
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values={
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"ts_added_ms": time_now,
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"key_json": json_bytes,
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}
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)
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return self.runInteraction(
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"add_e2e_one_time_keys", _add_e2e_one_time_keys
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)
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def count_e2e_one_time_keys(self, user_id, device_id):
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""" Count the number of one time keys the server has for a device
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Returns:
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Dict mapping from algorithm to number of keys for that algorithm.
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"""
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def _count_e2e_one_time_keys(txn):
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sql = (
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"SELECT algorithm, COUNT(key_id) FROM e2e_one_time_keys_json"
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" WHERE user_id = ? AND device_id = ?"
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" GROUP BY algorithm"
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)
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txn.execute(sql, (user_id, device_id))
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result = {}
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for algorithm, key_count in txn.fetchall():
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result[algorithm] = key_count
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return result
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return self.runInteraction(
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"count_e2e_one_time_keys", _count_e2e_one_time_keys
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)
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def claim_e2e_one_time_keys(self, query_list):
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"""Take a list of one time keys out of the database"""
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def _claim_e2e_one_time_keys(txn):
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sql = (
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"SELECT key_id, key_json FROM e2e_one_time_keys_json"
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" WHERE user_id = ? AND device_id = ? AND algorithm = ?"
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" LIMIT 1"
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)
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result = {}
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delete = []
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for user_id, device_id, algorithm in query_list:
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user_result = result.setdefault(user_id, {})
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device_result = user_result.setdefault(device_id, {})
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txn.execute(sql, (user_id, device_id, algorithm))
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for key_id, key_json in txn.fetchall():
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device_result[algorithm + ":" + key_id] = key_json
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delete.append((user_id, device_id, algorithm, key_id))
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sql = (
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"DELETE FROM e2e_one_time_keys_json"
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" WHERE user_id = ? AND device_id = ? AND algorithm = ?"
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" AND key_id = ?"
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)
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for user_id, device_id, algorithm, key_id in delete:
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txn.execute(sql, (user_id, device_id, algorithm, key_id))
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return result
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return self.runInteraction(
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"claim_e2e_one_time_keys", _claim_e2e_one_time_keys
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)
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@twisted.internet.defer.inlineCallbacks
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def delete_e2e_keys_by_device(self, user_id, device_id):
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yield self._simple_delete(
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table="e2e_device_keys_json",
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keyvalues={"user_id": user_id, "device_id": device_id},
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desc="delete_e2e_device_keys_by_device"
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)
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yield self._simple_delete(
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table="e2e_one_time_keys_json",
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keyvalues={"user_id": user_id, "device_id": device_id},
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desc="delete_e2e_one_time_keys_by_device"
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)
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